The Mon-Khmer languages are the autochthonouslanguage family of Southeast Asia. Together with the Munda languages of India, they are one of the two traditional primary branches of the Austroasiatic family. However, several recent classifications have abandoned this dichotomy, either reducing the scope of Mon-Khmer (Diffloth 2005) or breaking it up entirely (or equivalently reclassifying Munda as a branch of Mon-Khmer: Peiros 1998). See Austroasiatic languages.
These languages were not known when the original classification was made
References
Shorto, Harry L. edited by Sidwell, Paul, Cooper, Doug and Bauer, Christian (2006). A Mon-Khmer comparative dictionary. Canberra: Australian National University. Pacific Linguistics. ISBN 0-85883-570-3
Further reading
Adams, K. L. (1989). Systems of numeral classification in the Mon-Khmer, Nicobarese and Aslian subfamilies of Austroasiatic. Canberra, A.C.T., Australia: Dept. of Linguistics, Research School of Pacific Studies, Australian National University. ISBN 0858833735
Filbeck, D. (1978). T'in: a historical study. Pacific linguistics, no. 49. Canberra: Dept. of Linguistics, Research School of Pacific Studies, Australian National University. ISBN 0858831724
Hemeling, K. (1907). Die Nanking Kuanhua. (German language)
Shorto, H. L. Bibliographies of Mon-Khmer and Tai Linguistics. London oriental bibliographies, v. 2. London: Oxford University Press, 1963.